About UsAtNextlane, we don’t just develop software solutions – wecreate the futureof the automotive industry.We are a company that combinesadvanced technologywith a clear vision:simplifying and digitizingevery step of the automotive customer journey, empowering manufacturers and dealerships to thrive in a constantly evolving market.We believe in the value of every team member, offering opportunities for you todevelopand contribute to meaningful solutions.So… What does it mean to be a #Nextlaner?Be part of agrowth‑oriented llaborate withcolleagues from all over the world.Believe inthe Power of ideasand thediversity of thought.Be committed to provide an environment where you canlearn, grow, and collaborateon projects that make a global impact.Our success is measured not just by results, but also by the growth and satisfaction of those who are part of our company.At Nextlane, you’ll have the opportunity toinnovate ,push boundaries, andwork on solutions that are transformingthe automotive world.We are looking for a Senior Backend Engineer with strong expertise in C#/. NET, cloud‑native backend development, and API engineering.This is a hands‑on engineering role focused on building scalable, secure, and maintainable backend services in cloud environments. The engineer will work closely with Tech Leads and cross‑functional teams to implement high‑quality solutions aligned with established architectural and engineering standards.This role is not a Tech Lead or Architect position. The expectation is strong technical execution, active contribution to engineering quality, support for architecture compliance, and ownership of backend deliverables.AI‑assisted development practices are a core expectation for this role. Candidates should be comfortable using tools such as Cursor, Claude Code Codex, or similar within their daily engineering workflow.Your ResponsibilitiesBackend DevelopmentDesign, develop, and maintain backend services using C# and. NET Core.Build secure, scalable, and high‑performance REST APIs.Implement backend solutions aligned with approved architectural patterns and technical guidelines.Develop services capable of handling high concurrency and production‑scale workloads.Write optimized and maintainable database queries while ensuring data integrity and performance.Troubleshoot and resolve backend and production issues de Quality and Best PracticesWrite clean, maintainable, testable,



and production‑ready code.Apply SOLID principles and safeguard architectural practices such as Clean Architecture, Onion Architecture, Hexagonal Architecture, and Domain‑Driven Design (DDD).Implement and maintain unit, integration, end‑to‑end, and performance/load tests.Participate actively in code reviews and engineering quality ntribute to continuous improvement of development standards, tooling, and llaboration and Agile DevelopmentWork closely with Tech Leads, frontend engineers, QA engineers, and Dev Ops engineers.Translate technical and business requirements into high‑quality implementations.Support architecture compliance and contribute to solution improvement discussions.Provide technical guidance and support to less experienced engineers when needed.Participate actively in Agile ceremonies and team collaboration activities.Dev Ops, Cloud and ArchitectureWork with cloud platforms such as AWS, Azure, or ntainerize backend services using ntribute to CI/CD pipelines and automated deployment processes.Support observability and monitoring practices using logging, metrics, and tracing tools.Follow security, reliability, and operational best practices in backend ntinuous ImprovementStay up to date with advancements in backend technologies.Propose and implement improvements in system architecture and development ntribute to knowledge‑sharing initiatives and technical documentation.What We’re Looking ForExperienceA minimum of 6 years of experience in backend development.Experience in developing and maintaining scalable backend services.Experience writing and maintaining unit, integration and performance tests.Familiarity with Agile methodologies and Dev Ops practices.Hands‑on experience with Git Hub Copilot, Cursor, Claude‑Code … configuration, rule management and use.Experience working in cloud environments such as Azure, AWS, or Google Cloud Platform (GCP).LanguagesEnglish (Interview will be conducted in English)CommunicationStrong communication skills, both verbal and written.Technical SkillsStrong proficiency in C# and.



NET CoreStrong experience designing and implementing REST APIsStrong SQL and relational database experienceGood understanding of SOLID principles, design patterns, Clean Architecture, and Domain‑Driven Design (DDD)Experience with Docker and CI/CD workflowsExperience working with cloud platforms (AWS, Azure, or GCP)Understanding of scalable backend systems, observability, and reliability practicesAI EngineeringPractical experience using AI coding assistants in day‑to‑day software development (Cursor/Claude Code/Codex/Github Co‑pilot)Experience configuring or working with AI‑assisted engineering workflowsLanguage SkillsFluent in English (mandatory).French language proficiency is a plus.Soft SkillsStrong analytical and problem‑solving abilities.Excellent communication and collaboration in cross‑functional teams.Ability to take ownership and drive initiatives to completion.Interpersonal SkillsAbility to collaborate in a diverse and dynamic environment.Our Recruitment Process15‑minute introductory call with our Talent Acquisition Specialist.Interview with the Hiring Team.Technical Interview.What We OfferWe understand that flexibility and trust are essential for our teams. Here are some of the benefits we offer:Remote Work: Up to 3 days a week!Work‑life balance: We have adaptable entrance and departure time.Summer schedule on Fridays: Start early your weekends!Referral Bonus: €1500 for every talent you refer (after 6 months).Flexible Remuneration: COBEE platform.Private Medical Insurance: ntinuous Learning: Access to our internal platform for continuous development.Vacation: 23 vacation days plus an intensive schedule in July and August.Teambuilding: Our afterworks and activities are memorable!Diversity, Inclusion & BelongingAt Nextlane, we are committed to creating a space where everyone feels valued and respected. We firmly believe that diversity in experiences and backgrounds strengthens our culture and drives innovation.Support for people with disabilities. If you need any adjustments during the recruitment process, let us know so we can provide the best possible experience.Equal opportunities for all: We welcome applications regardless of age, gender, origin, disability, or any other characteristic protected by law.JoinNextlaneand become part of the technological revolution in the automotive industry.Discover why we are a great place to develop your talent!

📌 Senior Backend Engineer (.Net, Cloud & Apis) (Madrid)
🏢 Nextlane
📍 Madrid